22 Jul
2016
22 Jul
'16
3:57 p.m.
Hi Tickles,
a) Have you tried doing this on Asterisk realtime ? for any regular direct
registering extension w/o kamailio(even before kamailio) ? If an extension
registers to one asterisk the rest of the boxes would know where to contact
this extension via realtime-db ? I'd say give that a try and it may solve
your problem, else using this REGFWD block you can parallel fork this
register request to ALL of your boxes and everybox would think it is
registered locally ! (not a recommended option I must say)
b) If you ignore my previous comment of parallel forking registers, using
this REGFWD block you can use dispatcher module to replace the $var(rip)
and $sel(cfg_get.asterisk.bindport) by changing your REGFWD block like this:
route[REGFWD] {
if(!is_method("REGISTER"))
{
return;
}
if(!ds_select_dst("1", "4")) {
$var(rip) = $(du{s.select,1,:});
$var(rport) = $(du{s.select,2,:});
$uac_req(method)="REGISTER";
$uac_req(ruri)="sip:" + $var(rip) + ":" + $var(rport)
+
";transport=tcp";
$uac_req(furi)="sip:" + $au + "@" + $var(rip);
$uac_req(turi)="sip:" + $au + "@" + $var(rip);
$uac_req(hdrs)="Contact: <sip:" + $au + "@"
+ $sel(cfg_get.kamailio.bindip)
+ ":" + $sel(cfg_get.kamailio.bindport) +
">\r\n";
if($sel(contact.expires) != $null)
$uac_req(hdrs)= $uac_req(hdrs) + "Expires: " +
$sel(contact.expires) + "\r\n";
else
$uac_req(hdrs)= $uac_req(hdrs) + "Expires: " +
$hdr(Expires) + "\r\n";
uac_req_send();
}
}
In summary, depending upon your business logic/use case there could be
other ways to make this work as well.
Regards,
Sammy
On Fri, Jul 22, 2016 at 8:53 AM, Tickling Contest <
tickling.contest(a)gmail.com> wrote:
Hello,
When using Kamailio with the dispatcher module for Asterisk load
balancing, I am offloading REGISTERs to Kamailio (works fine), but would
like to forward the REGISTERs to Asterisk so that outgoing calls from
Asterisk will be possible. I know this is not strictly necessary (e.g.,
just use Kamailio to forward everything), but I have a lot of application
logic behind my Asterisk boxes (using ARI) and so I don't want that to
break. Thereby, I do need this information in Asterisk as soon as possible
from Kamailio.
Let's say I have three boxes Asterisk_1, Asterisk_2 and Asterisk_3 in the
dispatcher module like so:
1 sip:192.168.1.201:5060;transport=tcp
1 sip:192.168.1.202:5060;transport=tcp
1 sip:192.168.1.203:5060;transport=tcp
My system has endpoints as numerical extensions, from 101 to 110. When a
new endpoint registers with kamailio (and authenticates), I would like to
send the REGISTER to Asterisk. But I have the following questions:
(a) Which Asterisk? I could send it to a round-robinned Asterisk (say,
Asterisk_2), but that Asterisk may not be the one responsible for handling
calls outbound for the endpoint that just registered. Even if I use "hash
over auth username" instead of round-robin (In
http://www.kamailio.org/docs/modules/4.0.x/modules/dispatcher.html#idp16940…,
choose 5 for "alg", for example) that wont solve this problem as an
outbound request may come from another Asterisk box which won't have the
requisite registration information. Should I forward REGISTERs to all
Asterisk boxes? Maybe I won't have to deal with this issue as I use
realtime and so the REGISTER information, sent to one Asterisk box, is
available to all Asterisk boxes after the write to the realtime DB. Is my
understanding correct?
(b) How do I do this in kamailio.cfg? With some examples on the Internet
for WITH_ASTERISK directive, I see that you do
route[REGFWD] {
if(!is_method("REGISTER"))
{
return;
}
$var(rip) = $sel(cfg_get.asterisk.bindip);
$uac_req(method)="REGISTER";
$uac_req(ruri)="sip:" + $var(rip) + ":" +
$sel(cfg_get.asterisk.bindport) + ";transport=tcp";
$uac_req(furi)="sip:" + $au + "@" + $var(rip);
$uac_req(turi)="sip:" + $au + "@" + $var(rip);
$uac_req(hdrs)="Contact: <sip:" + $au + "@"
+ $sel(cfg_get.kamailio.bindip)
+ ":" + $sel(cfg_get.kamailio.bindport) +
">\r\n";
if($sel(contact.expires) != $null)
$uac_req(hdrs)= $uac_req(hdrs) + "Expires: " +
$sel(contact.expires) + "\r\n";
else
$uac_req(hdrs)= $uac_req(hdrs) + "Expires: " +
$hdr(Expires) + "\r\n";
uac_req_send();
}
What is the equivalent for when you are using the dispatcher module and
the kamailio.bindip and asterisk.bindip etc. are not set in the
configuration, but instead should be procured from elsewhere?
Any help is appreciated.
_______________________________________________
SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list
sr-users(a)lists.sip-router.org
http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users